To cite BeSS in publications use:

Wen C, Zhang A, Quan S, Wang X (2020). “BeSS: An R Package for Best Subset Selection in Linear, Logistic and Cox Proportional Hazards Models.” Journal of Statistical Software, 94(4), 1–24. doi:10.18637/jss.v094.i04.

Corresponding BibTeX entry:

  @Article{,
    title = {{BeSS}: An {R} Package for Best Subset Selection in
      Linear, Logistic and {C}ox Proportional Hazards Models},
    author = {Canhong Wen and Aijun Zhang and Shijie Quan and Xueqin
      Wang},
    journal = {Journal of Statistical Software},
    year = {2020},
    volume = {94},
    number = {4},
    pages = {1--24},
    doi = {10.18637/jss.v094.i04},
  }